package com.zym.community.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

public class CookieUtil {

    //获取指定cookie的value
    public static String getValue(HttpServletRequest request, String name){
        if (request == null || name == null){
            throw  new IllegalArgumentException("参数为空！");
        }

        Cookie[] cookies = request.getCookies();
        if (cookies != null){
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals(name)){
                    return cookie.getValue();
                }
            }
        }

        return null;  //没找到
    }
}
